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A criterion based adaptive RSIC scheme in underwater communication

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Journal of Systems Engineering and Electronics 2021年第2期32卷 408-416页

作者： KHAN Md Rizwan DAS Bikramaditya PATI Bibhuti Bhusan department of Electronics and Telecommunication Engineering Veer Surendra Sai University of TechnologyBurla 768018India department of Electrical Engineering Veer Surendra Sai University of TechnologyBurla 768018India

Multi-access interference(MAI)is the main source limiting the capacity and quality of the multiple-input multipleoutput orthogonal frequency division multiplexing(MIMO-OFDM)system which fulfills the demand of high-speed transmission rate and high quality of service for future underwater acoustic(UWA)***,multi-user detection(MUD)is needed at the receiver of the MIMO-OFDM system to suppress the effect of *** this research,MUD is achieved by using a criterion based adaptive recursive successive interference cancellation(RSIC)scheme at the receiver of a MIMO-OFDM system whose transceiver model in underwater communication is implemented by using the Bellhop simulation *** proposed scheme estimates and eliminates the MAI through user signal detection and subtraction from received signals at the receiver of the MIMO-OFDM system in underwater *** bit error rate(BER)performance of the proposed scheme is analyzed by using weight filtering and weight selection *** Matlab simulation,it is shown that the BER performance of the proposed scheme outperforms the conventional matched filter(MF)detector,the adaptive successive interference cancellation(SIC)scheme,and the adaptive RSIC scheme in the UWA network.

关键词： underwater acoustic(UWA) orthogonal frequency division multiplexing(OFDM) multi-user detection(MUD) multiaccess interference(MAI) recursive successive interference cancellation(RSIC)

Effects of Boron Nitride Nanopowder on Thermal, Chemical and Gas Barrier Properties of Starch

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Chinese Journal of Polymer Science 2014年第10期32卷 1311-1318页

作者： Gopal C. Pradhan Lingaraj Behera Sarat K. Swain department of chemistry North Orissa University Takatpur Baripada 757003 India department of chemistry Veer Surendra Sai University of Technology Burla Sambalpur 768018 India

Starch/boron nitride （starch/BN） bionanocomposites were prepared with the reinforcement of boron nitride nano powder by solution technique. The dispersion of BN in the starch was achieved by a continuous sonication process. The interaction between starch and boron nitride nanopowder was investigated by Fourier transform infrared （FTIR） spectroscopy. The structural properties of starch/BN bionanocomposites was studied by X-ray diffraction （XRD）. The high resolution transmission electron microscopy （HRTEM） was used for the study of dispersion of boron nitride in starch matrix and diffraction patterns were studied by selected area electron diffraction （SAED）. Thermal stability of the starch was increased with rising concentrations of boron nitride due to incorporation of rigid nano BN with starch matrix. The substantial reduction in oxygen permeability was obtained by increasing the concentration of BN. The biodegradability of synthesized bionanocomposites was measured by using activated sludge water. Further, it was noticed that, starch/BN bionanocomposites are resistant towards inorganic acids and bases. The tensile strength of starch/BN bionanocomposites was increased whereas; the water resistance property of the materials was decreased with increasing BN loading.

关键词： Starch Boron nitride Bionanocomposites Oxygen permeability.

POLY(METHYL METHACRYLATE)/SOY PROTEIN GREEN COMPOSITES AS GAS BARRIER MATERIALS

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Chinese Journal of Polymer Science 2012年第3期30卷 397-404页

作者： Sudhir K.Kisku Sarat K.Swain department of chemistry North Orissa UniversityTakatpurBaripada-757003India department of chemistry Veer Surendra Sai University of TechnologyBurlaSambalpur-768018India

Poly（methyl methacrylate）/soy protein （PMMA/SP） composites were prepared by emulsion polymerization method using potassium persulphate （KPS） as the radical initiator. The interaction of soy protein with PMMA was evidenced by Fourier transformed infrared （FTIR） spectroscopy. The structure of PMMA/SP composite： was investigated by X-ray diffraction （XRD） study and scanning electron microscopy （SEM）. The thermal properties of soy protein and PMMA/SP composites were compared with soy protein and virgin PMMA sample. PMMA/SP composites were found to be flame retardant materials from the measurement of limiting oxygen index （LOI） of samples. The oxygen permeability of PMMA/SP composites was substantially decreased as compared to virgin PMMA.

关键词： Soy protein Emulsion polymerization Biodegradability Oxygen permeability.

A Comprehensive Review of Path Planning Algorithms for Autonomous Underwater Vehicles

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International Journal of Automation and computing 2020年第3期17卷 321-352页

作者： Madhusmita Panda Bikramaditya Das Bidyadhar Subudhi Bibhuti Bhusan Pati department of Electronics and Telecommunication Veer Surendra Sai University of TechnologyBurla 768018India School of Electrical Sciences Indian Institute of TechnologyGoa 403401India department of Electrical Engineering Veer Surendra Sai University of TecnlogyBurla 768018India

The underwater path planning problem deals with finding an optimal or sub-optimal route between an origin point and a termination point in marine *** underwater environment is still considered as a great challenge for the path planning of autonomous underwater vehicles(AUVs)because of its hostile and dynamic *** major constraints for path planning are limited data transmission capability,power and sensing technology available for underwater *** sea environment is subjected to a large set of challenging factors classified as atmospheric,coastal and *** on whether the impact of these factors can be approximated or not,the underwater environment can be characterized as predictable and unpredictable *** classical path planning algorithms based on artificial intelligence assume that environmental conditions are known apriori to the path *** the current path planning algorithms involve continual interaction with the environment considering the environment as dynamic and its effect cannot be *** planning is necessary for many applications involving *** are based upon planning safety routes with minimum energy cost and computation *** review is intended to summarize various path planning strategies for AUVs on the basis of characterization of underwater environments as predictable and *** algorithms employed in path planning of single AUV and multiple AUVs are reviewed in the light of predictable and unpredictable environments.

关键词： Autonomous underwater vehicle(AUV) cooperative motion formation control optimization path planning(PP)

Thermal and Oxygen Barrier Properties of Chitosan Bionanocomposites by Reinforcement of Calcium Carbonate Nanopowder

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Journal of Materials Science & technology 2014年第8期30卷 791-795页

作者： Sarat K. Swain Satyabrata Dash Sudhir K. Kisku Rajesh K. Singh department of chemistry Veer Surendra Sai University of TechnologyBurlaSambalpur 768018India department of chemistry North Orissa UniversityTakatpurBaripada 757003India

Chitosan and calcium carbonate nanopowder（chitosan/CaCO3） bionanocomposites were prepared by solution *** between chitosan and CaCO3 was studied by Fourier transform infrared spectroscopy（FTIR）.Structure and surface morphology of chitosan/CaCO3 bionanocomposites were investigated by X-ray diffraction（XRD） and field emission scanning electron microscopy（FESEM）,*** energy dispersive X-ray spectroscopy（EDS） of chitosan/CaCO3 bionanocomposites was studied in order to establish the elements of *** stability of prepared bionanocomposites was studied by thermogravimetric analysis（TGA） and a substantial increase of thermal stability of virgin chitosan was noticed due to incorporation of CaCO3 *** oxygen permeability was reduced by three times as compared to the raw chitosan due to the dispersion of nano CaCO3 *** and resistance towards dilute acid and alkali of the prepared bionanocomposite were *** bionanocomposite having gas barrier and thermal stable property may be suitable for packaging and biomedical applications.

关键词： Chitosan Nanocomposites Thermal properties Oxygen permeability

Oxygen Barrier of Multiwalled Carbon Nanotube/Polymethyl Methacrylate Nanocomposites Prepared by in situ Method

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Journal of Materials Science & technology 2012年第5期28卷 391-395页

作者： Ajaya K. Pradhan Sarat K. Swain department of chemistry North Orissa University Takatpur Baripada 757003 India department of chemistry Veer Surendra Sai University of Technology Burla Sambalpur 768018 India

Multiwalled carbon nanotubes （MWCNTs）/poly（methyl methacrylate）（PMMA） nanocomposites were prepared by ultrasonic assisted emulsifier free emulsion polymerization technique with variable concentration of functionalized carbon nanotubes. MWCNTs were functionalized with H 2 SO 4 and HNO 3 with continuing sonication and polished by H 2 O 2 . The appearance of Fourier transform infrared absorption bands in the PMMA/MWCNT nanocomposites showed that the functionalized MWCNT interacted chemically with PMMA macromolecules. The surface morphology of functionalized MWCNT and PMMA/MWCNT nanocomposites were studied by scanning electron microscopy. The dispersion of MWCNT in PMMA matrix was evidenced by high resolution transmission electron microscopy. The oxygen permeability of PMMA/MWCNT nanocomposites gradually decreased with increasing MWCNT concentrations.

关键词： Nanocomposites Morphology Permeability Dispersion

Physico-chemical,bacteriological and health hazard effect analysis of the water in Taladanda Canal,Paradip area,Odisha,India

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Journal of Groundwater Science and Engineering 2020年第4期8卷 338-348页

作者： Rabiranjan Prusty Trinath Biswal department of chemistry veer surendra sai university of technology burla-768018 India

The physico-chemical and bacteriological parameters of the water in Taladanda canal and associated water-borne diseases,from which the dwellers have suffered,were studied,by using statistical *** and the addition of the wastes with sources from urbane industrial sectors,as well as the decrease in water level have caused the canal water quality declined drastically and subsequently led to extensive eutrophication and bacterial *** to the water sample analytical results,the water is lightly acidic with the pH value of 4.5~*** measured indexes,such as total dissolved solid(TDS),electrical conductivity(EC),total suspended solid(TSS),Mn,Zn,Al,Fe,Cu,Cr,and Hg etc,mostly have very high concentrations which are higher than permissible limit,indicating that the canal water is completely unsuitable for human ***,the biological analysis shows that the total coliform(TC)is in the range of 45.9~30.2 in per 100 mL water in April,30.5~25.3/100 mL in July and 52.9~35.4/100 mL in December,***,fecal coliform(FC)ranges from 12.8 to 10.1,10.5~7.5 and 13.1~6.4 per 100 mL water in the months of April,July and December *** a result,people who use the water have suffered from different water-borne *** the basis of disease data derived from hospital observations in a period of three years,there had been 4284 people affected by different waterborne diseases from 2016 to 2018.

关键词： Water quality Pollution Physico-chemical assessment Bacteriological parameters Health hazard Coliform E.coli

Study of nucleon-nucleon and alphanucleon elastic scattering by the Manning-Rosen potential

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Communications in Theoretical Physics 2020年第7期72卷 60-64页

作者： A K Behera J Bhoi U Laha B Khirali department of Physics National Institute of TechnologyJamshedpur831014India department of Physics Veer Surendra Sai University of TechnologyBurla-768018OdishaIndia

Although often used in molecular dynamics,in this work the Manning-Rosen potential is parameterized to compute the scattering phase shifts for the nucleon-nucleon and the alphanucleon systems by exploiting the standard phase function *** obtain excellent agreement in phase shifts with the more sophisticated calculations up to partial waves l=2.

关键词： phase function method Manning-Rosen potential scattering phase shifts nucleon-nucleon and the alpha-nucleon systems

Evaluation of Dielectric Properties of CCTO-BT/Epoxy Composites for Electronic Applications

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Journal of Harbin Institute of technology(New Series) 2024年第1期31卷 69-77页

作者： Swagatika Mishra Punyapriya Mishra Punyatoya Mishra Dinesh Kumar Mishra Krushna Prasad Shadangi Deepak Kumar Mohapatra department of Mechanical Engineering Veer Surendra Sai University of TechnologyBurlaOdisha 768018India department of Physics Parala Maharaja Engineering CollegeBerhampurOdisha 761003India department of Metallurgical and Materials Engineering Veer Surendra Sai University of TechnologyBurlaOdisha768018India department of Chemical Engineering Veer Surendra Sai University of TechnologyBurlaOdisha 768018India

In the current study,the calcium copper titanate(CCTO)/epoxy,barium titanate(BT)/epoxy and CCTO-BT/epoxy composite samples with variable volume fractions of CCTO and BT are fabricated using hand lay-up and compression moulding process. The composite samples are characterized for the frequency dependence on dielectric properties,conductivity,impedance spectroscopy and electrical modulus.X-ray diffraction(XRD)representation of CCTO-BT/epoxy composite samples confirmed the presence of both CCTO and BT ceramic samples separately. The dielectric characteristics of hybrid CCTO-BT/epoxy composite samples with CCTO∶BT ratio of 40∶60, 60∶40,and 50∶50 was found relatively better than those of single ceramic filler reinforced epoxy composites. AC conductivity analysis shows improvement in the results of hybrid filler-filled CCTO-BT/epoxy composites in comparison with single filler-filled epoxy composite.50∶50 CCTO-BT/epoxy composite shows the best AC conductivity value of~ 2.2 ×10^(-5) ohm^(-1)·m^(-1) at a higher frequency of 1MHz. The impedance analysis confirms the higher insulating properties for hybrid 40∶60 and 60∶40 CCTO-BT/epoxy composites with respect to the single and other hybrid ceramic epoxy composites. The analysis suggests the hybrid CCTO-BT/epoxy composites to be adopted as a potential dielectric material for energy storage devices and other electronic applications.

关键词： ceramic filler dielectric characterization hybrid Composite AC conductivity impedance analysis